location key cache in user credentials
GetUserMessageStep, user message verification
package restructuring
remove the old user message queue concept
base user message class
Merge branch 'um-queue' into user-messages

Conflicts:
	org.hive2hive.core/src/org/hive2hive/core/process/common/get/GetUserMessageQueueStep.java
	org.hive2hive.core/src/org/hive2hive/core/process/login/HandleUserMessageQueueStep.java
	org.hive2hive.core/src/org/hive2hive/core/process/login/PostLoginProcessContext.java
	org.hive2hive.core/src/org/hive2hive/core/process/login/SynchronizeFilesStep.java
	org.hive2hive.core/src/org/hive2hive/core/security/UserCredentials.java
signature and verification of user message base type, made usermessage a
runnable
deletion of UM Container, renaming to UserProfileTask
Merge branch 'user-messages'